| ST |
| MICROCHIP |
| Xilinx |
- Original content, please do not reprint.
Many chips are screen printed in the form of code, so today we will take a few chips and let's take a look at how the screen seals are marked.
ST
data code 2021+
ST material year, a lot of people will think it is to see here,
In fact, let's look at the specification book in the lower right corner is the last row number, YWW, YERS WEEK WEEK year and cycle, not much to see the real thing.
STM32F103RCT6:
This part of the 103 is 2021,2 omitted
STM32F429ZGT6:
The F429 model is 1828, if it is 28 years is not logical, right, 22 years has not passed, 28 years soon through? So it's been 18 years here
STM32F103RCT6:
Here it is 2021
STM8S1 03K3T6C:
This material is 1551 is also look at this position
STM8S005C6T6:
This material is 1736
Whether 1 or 2 is omitted in front of the year logo of ST, I can not read the specification book accordingly, so I can only rely on some common sense to judge.
I know where the right official description of friends are also welcome to leave a message to tell me oh.
MICROCHIP
MICROCHIPS The year identification method, YYWW is the year cycle after the NN is alphanumeric traceability
PIC16F1527-I/PT:
date code 1827+
16F1527 This date code is 1827, it is not much better than ST.
PIC18F43K20-I/PT:
43K20 Look here 1927, CC7 is the new source code.
PIC16F1779-I/PT:
1779 This one is looking at it here for 21 years and 14 weeks.
PIC16F876A-I/SO:
In addition to the package of QFP, some SOP microchips is also the last row, 16F876 this year is 20 years 32 weeks , abbreviation 2032.
The Year Identification Method of MICROCHIPS.
The last row is usually interpreted as a lot code, in the MICROCHIPS core ball.
Xilinx
The XILINX chip is also a lot of code form, many people will mistake the LOT CODE line is the year, in fact, the XILINX logo is behind the model. DATE CODE, Date code this place,
very simple, look at the physical picture immediately understand.
XC3S400-4PQ208C:
XC3S400 The date code of this model is 1715 + at the end of this place, 17 years 15 weeks.
XC7z020-2clg400i:
xc7z020 This position is 1801 2018year 01 weeks.
XC6SLX45T-3FGG484C:
Also at the end of the date code is 1933 + 19 for 33 weeks.
XC7A35T-2FGG484C：
XC7A35T Also look at this position in 2021.
Because the relationship of time is only an example of this type of year identification, of course, some other types of packaging model identification methods are different, if you
are interested, you can topic a brand to do a period for you.
